Progress Lighting P7191-31 Energy Efficient Lamps with Polycarbonate Diffuser, Black Black Finish Clear prismatic polycarbonate Size: 4-1/2-Inch Width, 6-3/4-Inch Height Extends 5-7/8-Inch Uses (2) 7-Watt 2-pin, twin compact fluorescent bulbs Progress Lighting has over 5,000 lighting fixtures offered in our catalog, the largest single source for residential and commercial lighting